Compare 1943 vs 1951
| Property | 1943 | 1951 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 291 × 671 | 19511 |
| Prime factorization | 29 × 67 | 1951 |
| Divisors count | 4 | 2 |
| Divisors | 1, 29, 67, 1943 | 1, 1951 |
| Number of properties | 1 | 3 |
| Cuban primes 1 | 14th | |
| Primes | 297th | |
| Semiprimes | 561st | |
| Twin primes (2nd member) | 60th | |
| Roman numberals | MCMXLIII | MCMLI |
| Base 2 | 111100101112 | 111100111112 |
| Base 3 | 21222223 | 22000213 |
| Base 4 | 1321134 | 1321334 |
| Base 5 | 302335 | 303015 |
| Base 6 | 125556 | 130116 |
| Base 7 | 54447 | 54557 |
| Base 8 | 36278 | 36378 |
| Base 9 | 25889 | 26079 |
| Base 10 | 194310 | 195110 |
| Base 11 | 150711 | 151411 |
| Base 12 | 115b12 | 116712 |
| Base 13 | b6613 | b7113 |
| Base 14 | 9cb14 | 9d514 |
| Base 15 | 89815 | 8a115 |
| Base 16 | 79716 | 79f16 |